PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 8863830-9 1996 The CYP3A1 transcriptional inducer and glucocorticoid antagonist pregnenolone 16 alpha-carbonitrile at 100 microM blocks dexamethasone binding to the GR in 21-day-old rat liver soluble fractions but is less effective in 90-day-old rat liver soluble fractions in contrast with 10 microM glucocorticoid antagonist RU486, which is equally effective at blocking dexamethasone binding to the GR. Pregnenolone Carbonitrile 65-99 cytochrome P450, family 3, subfamily a, polypeptide 23-polypeptide 1 Rattus norvegicus 4-10